// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Flags: --allow-natives-syntax

const s = new Map();

function foo(s) {
  const i = s[Symbol.iterator]();
  i.next();
  return i;
};
ArkTools.prepareFunctionForOptimization(foo);
print(foo(s));
print(foo(s));
ArkTools.optimizeFunctionOnNextCall(foo);
print(foo(s));
